Winterizing 2019 Crossfit w/ Truma Combi

[DUTCH in Atlanta]

Originally Posted by Flatlander1

I have pink stuff in toilet bowel and in kit sink. Fresh and grey are showing empty and black 30%. I don't think this dealer has any idea how to winterize the Truma combo and if he used Sani-con to empty tanks from his leak check, not sure he re-winterized it afterwards. He did open the low point valves tho!!

Draining the tanks doesn't do anything to remove the freezable water from the various water lines.

[Flatlander1]

Yes, I totally agree!!
I winterized with air on my previous trailer with no problems!! I assumed the dealer was competent to cover me with the sani & truma but I was obviously wrong.
Going to go hit the books and/or Youtube and get done while above freezing later today.
Thanks for the input!